the mall will be closed tomorrow as police and atf and the fbi continue their investigation. no word on a motive or the identity of the gunman. now, "nightline" will have more after this newscast at 11 oocht 35. >>> a late decision on four fire houses. contra costa county supervisors decided to close stations in love lafayette, martinez, clayton and walnut creek. they will close about $3 million a year. the supervisors say they were forced to close the station after voters turned down a seven-year parcel tax that would have kept them open. >>> a bad year for murders has gotten worse. the latest victim was a teenager whose death invaded a peaceful neighborhood with a crash. abc7 news reporter john olson is live to explain what happened. john? >> reporter: the city's 44th homicide of the year took place in this quiet neighborhood with houses and christmas lights. an area not known for serious crime. the victim is thought to be an 18-year-old man who may have been stabbed in the neck before or as he was behind the wheel of his pick up. the victim's truck jumped the curb and land